# What is the density of acetylene (C2H2) in grams per litre at STP? Show your work.?

What is the density of acetylene (C2H2) in grams per litre at STP?

Show your work.

Grade 11 Chemistry.

### 2 Answers

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- Lexi RLv 79 years agoFavorite Answer
At STP 1 mole of any ideal gas occupies a volume of 22.4 L

mass of 1 mole of C2H2 = (2 x 12.01) + (2 x 1.008) = 26.036 g

So at STP 26.036 g of C2H2 has a volume of 22.4 L

density = mass / volume

= 26.036 g / 22.4 L

= 1.16 g/L

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